8552381 has 2 divisors, whose sum is σ = 8552382. Its totient is φ = 8552380.

The previous prime is 8552363. The next prime is 8552429. The reversal of 8552381 is 1832558.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4687225 + 3865156 = 2165^2 + 1966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8552381 is a prime.

It is a super-2 number, since 2×8552381² = 146286441538322, which contains 22 as substring.

It is equal to p₅₇₄₄₃₉ and since 8552381 and 574439 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8552351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4276190 + 4276191.

It is an arithmetic number, because the mean of its divisors is an integer number (4276191).

Almost surely, 2^8552381 is an apocalyptic number.

It is an amenable number.

8552381 is a deficient number, since it is larger than the sum of its proper divisors (1).

8552381 is an equidigital number, since it uses as much as digits as its factorization.

8552381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 32.

The square root of 8552381 is about 2924.4454175108. The cubic root of 8552381 is about 204.5011148844.

The spelling of 8552381 in words is "eight million, five hundred fifty-two thousand, three hundred eighty-one".